We live in a world where most of what we see around, and say we want to use - there is always a thought that how it would look like - in the upcoming days.
Be it a house, a car, or some property or a nice dress - we always wonder how it will stay in trend in future.
We need some prediction on how this Stock I am planning to buy is going to fare in future. ( btw: as I write this - IBM is holding a good pattern at USD 203.00 / share, it dropped a bit - but then it came back to a holding pattern of around 205.00 , now that's a trend.)
So, there is always a constant need to see how things pan out in the future - this is the predictive analysis - of how our computations based on the current situation - will do in future.
Now, this is a good pattern to follow, and also stay in touch - as this might give me helpful tips on how we can plan out our next moves, and make good decisions.
IBM Performance Analyzer - does exactly that - looks at the data collected by various agents and computes the pattern for the next few days, and months, giving the end -user or a network admin -or someone who is planning the resources - to make good decisions - whether to procure new hardware, and so on.